What does abbreviate mean?
The definition of abbreviate
Ab*bre”vi*ate, v.t.
[imp. & p.p. Abbreviated; p.pr. & vb.n.Abbreviating.]
Etym: [L. abbreviatus, p.p. of abbreviare; ad + breviare to shorten, fr. brevis short. See Abridge.]

1 To make briefer; to shorten; to abridge; to reduce by contraction or omission, especially of words written or spoken. It is one thing to abbreviate by contracting, another by cutting off. Bacon.
2 (Math.)
To reduce to lower terms, as a fraction.

Ab*bre”vi*ate, a.
Etym: [L. abbreviatus, p.p.]

1 Abbreviated; abridged; shortened. [R.] “The abbreviate form.” Earle.
2 (Biol.)
Having one part relatively shorter than another or than the ordinary type.

Ab*bre”vi*ate, n.
An abridgment. [Obs.] Elyot.